Adjustable book-support



Patented Mar. 2|, |899.

' L. A. MAYO.

ADJUSTABLE 800K- SUPPORT.

(Application led May 21, 1898.)

(No Model.)

IN u. v

Nirnn STATES lLOUIS ALLEN MAYO, OF CLIFTON HILL, MISSOURI.

i ADJUSTABLE BooK-SUPPORT.

SPEIFICATION forming part of Letters Patent No. 621,357, dated March 21, 1899. Application filed May 21, 189.8. `Serial No. 681,316. (No model.)

To all whom t may concern:

Be it known that I, LoUls ALLEN MAYO, a citizen of the United States, residing at Clifton Hill, in the county of Randolph and State of Missouri, have invented a new and useful Adjustable Book-Support, of which the following is a specification.

My invention is in the nature of an improved adjustable and revoluble desk, stand, or support for heavy books.

The object of my invention is to provide an adjustable book-support especially intended to be screwed or bolted to a hotel-counter to support the register, although equally applicable for use by commercial houses, banks, record-offices, and similar establishments for conveniently holding and manipulating led gers, records, or other heavy books the position of which it is desirable to change frequently for reference thereto or making entries and rulings therein.

Withthis object in view my invention consists in an adjustable book-support comprising abase adapted to be screwed or bolted to a counter, table, or desk, a pedestal revolubly mounted thereon and provided ,with a head or top supplied with radiating arms,

preferably four, lugs projecting upward from two of said arms diametrically opposite each other, a frame pivotally mounted in said lugs in a manner to permit of its tilting, adjusting devices secured to the other two diametrically opposite arms to secure the tilting frame in position, and extensible rods at one end of the tilting frame provided with means for s ecuring various sizes of books thereupon.

My invention further consists in the improved construction, arrangement, and combination of parts hereinafter fully described and afterward particularly pointed out in the claims.

In order to enable others skilled in the art to which my invention most nearlyappertains to make-and use the same, I will now proceed to describe its construction and operation, having reference to the accompanying drawings, forming part hereof, in which- Figure l is a perspective view illustrating a book support constructed in accordance with my invention. Fig. 2 is a vertical sectional view of the same, taken on a plane cut through from front' to rear. Fig. 3 is a detail vother suitable means.

is an opening square in outline and of two- Referring to the drawings by letters, A indicates a flat base adapted to be secured to a counter, desk, or table by screws, bolts, or Centrally through it diameters, the larger diameter being adapted to receive the square head B of a square bar O, while the smaller diameter fits the bar itself. Upon this square bar is fitted a bushing D, upon which a hollow pedestal E is mounted to turn, said pedestal being provided with a circular base F, threaded uponits lower end, bearing-balls G being inserted in ing-balls K in opposing grooves in its lower surface and the upper surface of the top or head H. This head .I is held down by a nut L, threaded upon the reduced upper end of bar O and covered by a flat cap M, threaded upon the concentric fiange I. j

The top H of the pedestal is provided with four radial arms N N and O O ninety degrees apart. On the diametrically opposite arms N N are lugs P P, in which a frame Q is tiltably pivoted. The other arms O O are vertically bored to receive pins R R, which bear under the tiltable frame in opposite directions from its pivots to adjust its inclination, being moved up or down by hand and secured in any adjustment by thumb-screws S S.

Tubes T T are secured to the frame Q, in which are slidably mounted rods U U, provided with hooks to pass over the end of the frame and secure abook in position thereon, the rods being rigidly secured in any adjustment by thumb-screws V.

The construction of my invention will be readily understood from the foregoing description, and its operation may be described as follows: The base A being secured to the IOO counter, desk, or table, anyheavy book, such as a hotel-register, may be laid on the tilting frame and secured by the hooked rods U U, when it may be tilted to any desired inclination and secured by the thumb-screws S S and may be turned in any direction, the tilting frame and pedestal rotating on the bushing, the rotative movement being rendered smooth and easy by the ball-bearings.

While I have illustrated and described the best means now known to me for carrying out my invention, I do not wish to be understood as restricting myself to the exact details of construction shown, but hold that any slight variation therefrom such as might suggest itself to the ordinary mechanic would clearly be comprehended in the limit and scope of my invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is-

l. In combination, the base, the headed square bar rising therefrom, the bushing thereon, the pedestal mounted to turn on the bushing having a base carried on the main base by ball-bearings, the top or head of the pedestal, the head screwed on the top of the square bar and supported upon the pedestalhead by ball-bearings, the concentric threaded flange projecting upward from the pedestal-head, and the cap threaded thereon, substantially as described.

2. The combination of the rotatable pedestal, its head provided with radial arms N, N, O, O, the tilting frame pivoted in lugs on arms N, N, the adjusting-pins slidably mounted in Vertical openings through arms O, O, and bearing under the tilting frame at opposite sides of its pivots, and the thumb-screws for securing the pins, substantially as dcscribed.

LOUIS ALLEN MAYO.

Vi tuesscs:

A. J. BRADsHER, T. R. MAYO. 

